ZANOLLI TEOREMA POLIS PW, Manual For Installation, Use And Maintenance

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7. MAINTENANCE
TEOREMA POLIS PW 36
7.2. Door Lubrication
It is advisable to clean and lubricate the opening and closing system every
6 months, as the regular opening and closing of the oven door tends to
dry the lubricating grease/lubricant contained inside making the door noisy
and less easy to slide, as described below:
1- Remove dirt between bushings and door brackets using a brush
from outside;
2- Remove fixing screws and the front metal sheet of the door;